[1] Miulli Gen Hosp, Div Nephrol, Acquaviva Delle Fonti, Italy
[2] Dalysis Ctr SM2, Policoro, Italy
[3] Assoc Nefrol Gabriella Sebastio, Martina Franca, Italy
[4] Colchester Gen Hosp, Dept Nephrol, Colchester, Essex, England
[5] Koc Univ, Dept Med, Sch Med, Div Nephrol, Istanbul, Turkey
[6] Univ Hosp Maastricht, Div Nephrol, Dept Internal Med, Maastricht, Netherlands
[7] Med Univ Graz, Otto Loewi Res Ctr, Graz, Austria
[8] Manchester Univ Hosp Fdn Trust, Manchester Acad Hlth Sci Ctr, Manchester, Lancs, England
[9] Univ Manchester, Manchester, Lancs, England
[10] UCL, Div Med, UCL Ctr Nephrol, Royal Free Hosp, London, England
[11] Azienda Osped Univ Consorziale Policlin, Dept Nephrol Dialysis & Transplantat, Bari, Italy